From 4acb4205ebbf64b6f2faf198a71a6134b3be7416 Mon Sep 17 00:00:00 2001
From: Andrew Ayer <agwa@andrewayer.name>
Date: Sun, 24 May 2015 18:58:13 -0700
Subject: [PATCH] git_version: cache the Git version

(to avoid repeated invocations of `git version`)
---
 commands.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/commands.cpp b/commands.cpp
index 19111e3..2b86930 100644
--- a/commands.cpp
+++ b/commands.cpp
@@ -89,9 +89,10 @@ static std::vector<int> parse_version (const std::string& str)
 	return version;
 }
 
-static std::vector<int> git_version ()
+static const std::vector<int>& git_version ()
 {
-	return parse_version(git_version_string());
+	static const std::vector<int> version(parse_version(git_version_string()));
+	return version;
 }
 
 static std::vector<int> make_version (int a, int b, int c)